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发明名称
Potentiometer device
摘要
申请公布号
US2024275(A)
申请公布日期
1935.12.17
申请号
US19350026510
申请日期
1935.06.13
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
CLARK JEAN HAROLD
分类号
H04B1/64
主分类号
H04B1/64
代理机构
代理人
主权项
地址
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